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<title>OpenRF - RL78 and SX1231 Implementation: C:/Users/OmegaDog/Dropbox/Kiln/OpenRF/Protocol_Platform/SourceCode/OpenRF_MAC/openrf_mac.c Source File</title>
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   <div id="projectname">OpenRF - RL78 and SX1231 Implementation
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   <div id="projectbrief">This is the open source OpenRF protocol platform, built for the RL78 microcontroller and the SX1231 radio</div>
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<li class="navelem"><a class="el" href="dir_ec5974339a1de2ed9600da4dc21f3a8e.html">SourceCode</a></li><li class="navelem"><a class="el" href="dir_2d6a8c562c0685b88876f970c302df63.html">OpenRF_MAC</a></li>  </ul>
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<div class="title">openrf_mac.c</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*************************************************************************************</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">**                                                                                  **</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">**  openrf_mac.c            OpenRF(tm) MAC Layer                                    **</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">**                                                                                  **</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">**************************************************************************************</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">**                                                                                  **</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">** Written By:  Steve Montgomery                                                    **</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">**              Digital Six Laboratories LLC                                        **</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">** (c)2012 Digital Six Labs, All rights reserved                                    **</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">**                                                                                  **</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">**************************************************************************************/</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">// Revision History</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">// Revision     Date    Revisor     Description</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">// ===================================================================================</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">// ===================================================================================</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">//#define RADIO_SI1000</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#define RADIO_SX1231</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#include &quot;..\includes\openrf_mac.h&quot;</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="keyword">enum</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;{</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;    kAckTimer</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;} timerDefs;</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment">// ***********************************************************************************</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="comment">// ** Private variables</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="comment">// ***********************************************************************************</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="keyword">struct</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;{</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    <a class="code" href="group___open_r_f.html#ga0191e76d54bb003723263a47fa9a7101">tOpenRFStates</a> macState;</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    <a class="code" href="group___radio.html#gaba81c4c5fad7e2e0cef01f8e6c710ecb">tPacketTypes</a> txPacketType;</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    <a class="code" href="group___radio.html#gaba81c4c5fad7e2e0cef01f8e6c710ecb">tPacketTypes</a> rxPacketType;</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    U16 timers[4];</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    U16 ackTimeout;</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    U8 ackRetries;</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    U8 ackRetryCounter;</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    UU32 rxSourceMAC;</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;    UU32 rxDestinationMAC;</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    <a class="code" href="group___open_r_f.html#gafc8ed4739129ef185b07220c9406f531">tOperatingMode</a> operatingMode;</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;} xdata openRFPrivateData;</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="comment">// ***********************************************************************************</span></div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="comment">// ** Event Handlers </span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="comment">// ***********************************************************************************</span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="keyword">extern</span> <span class="keywordtype">void</span> NotifyRadioPacketReceived(<a class="code" href="group___radio.html#gaba81c4c5fad7e2e0cef01f8e6c710ecb">tPacketTypes</a> packetType, UU32 sourceMACAddress,U8 length, U8 xdata *SDU)</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;{</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    openRFPrivateData.rxSourceMAC = sourceMACAddress;</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    <span class="keywordflow">if</span>(packetType == <a class="code" href="group___radio.html#ggaba81c4c5fad7e2e0cef01f8e6c710ecbacb072737fc8b959c9d08bccf3880a372">PACKETTYPE_ACK</a>)</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    {</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;        openRFPrivateData.macState = <a class="code" href="group___open_r_f.html#gga0191e76d54bb003723263a47fa9a7101a19d8199da79ca4c28eb644052b08f632">kIdle</a>;</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;        <span class="comment">// if the ACK is for our last transmission, record the transmission as complete.  Otherwise ignore it.</span></div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;        <span class="keywordflow">if</span>(sourceMACAddress.U32 == openRFPrivateData.rxDestinationMAC.U32)</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;            NotifyMacPacketSent();</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    }</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;    <span class="keywordflow">else</span></div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    {</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;        openRFPrivateData.macState = <a class="code" href="group___open_r_f.html#gga0191e76d54bb003723263a47fa9a7101a19d8199da79ca4c28eb644052b08f632">kIdle</a>;</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;        <span class="keywordflow">if</span>(packetType == <a class="code" href="group___radio.html#ggaba81c4c5fad7e2e0cef01f8e6c710ecba05720cb63d7daa7b80a60a8930396ca3">PACKETTYPE_UNIACK</a>)</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;        {</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;            openRFPrivateData.macState = <a class="code" href="group___open_r_f.html#gga0191e76d54bb003723263a47fa9a7101a2b19c68e5a1e48fcb1227d09382413de">kAckRequired</a>;</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;        }</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;        openRFPrivateData.rxPacketType = packetType;</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;        NotifyMacPacketReceived(packetType, sourceMACAddress, length, SDU);</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    }</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;}</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="keyword">extern</span> <span class="keywordtype">void</span> NotifyRadioReceiveError()</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;{</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    <span class="comment">//NotifyMacReceiveError();</span></div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;}</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="keyword">extern</span> <span class="keywordtype">void</span> NotifyRadioPacketSent()</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;{</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    <span class="keywordflow">if</span>(openRFPrivateData.txPacketType == <a class="code" href="group___radio.html#ggaba81c4c5fad7e2e0cef01f8e6c710ecba05720cb63d7daa7b80a60a8930396ca3">PACKETTYPE_UNIACK</a>)</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;        openRFPrivateData.macState = <a class="code" href="group___open_r_f.html#gga0191e76d54bb003723263a47fa9a7101a1bec80a402b7a72ae776bf8631871643">kPacketTransmitted</a>;</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    <span class="keywordflow">else</span></div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;    {   </div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;        NotifyMacPacketSent();</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;        openRFPrivateData.macState = <a class="code" href="group___open_r_f.html#gga0191e76d54bb003723263a47fa9a7101a19d8199da79ca4c28eb644052b08f632">kIdle</a>;</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    }</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;}</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="keyword">extern</span> <span class="keywordtype">void</span> NotifyRadioPacketSendError()</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;{</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    NotifyMacPacketSendError(<a class="code" href="group___open_r_f.html#gga75b3ac4a450160131d80d0178b974101af2cd3231820315500697550960956126">kUndefined</a>);</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    openRFPrivateData.macState = <a class="code" href="group___open_r_f.html#gga0191e76d54bb003723263a47fa9a7101a19d8199da79ca4c28eb644052b08f632">kIdle</a>;</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;}</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="keyword">extern</span> <span class="keywordtype">void</span> NotifyRadio1Second()</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;{</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    NotifyMac1Second();</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;}</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="keyword">extern</span> <span class="keywordtype">void</span> NotifyRadio1MilliSecond()</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;{</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;    U8 i;</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    NotifyMac1MilliSecond();</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    <span class="keywordflow">for</span>(i=0;i&lt;4;i++)</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;        openRFPrivateData.timers[i]++;</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;}</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="keywordtype">void</span> ClearOpenRFTimer(U8 timerNumber)</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;{</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;    DisableInterrupts;</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;    openRFPrivateData.timers[timerNumber] = 0;</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    EnableInterrupts;</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;}</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;<span class="comment">// ***********************************************************************************</span></div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;<span class="comment">// ** Public API</span></div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="comment">// ***********************************************************************************</span></div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;</div>
<div class="line"><a name="l00108"></a><span class="lineno"><a class="code" href="group___open_r_f.html#ga7ada26870c6e5d53afb9e7502d39d841">  108</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="group___open_r_f.html#ga7ada26870c6e5d53afb9e7502d39d841">OpenRFSendPacket</a>(UU32 destAddress, <a class="code" href="group___radio.html#gaba81c4c5fad7e2e0cef01f8e6c710ecb">tPacketTypes</a> packetType, U8 length, U8 xdata *txBuffer)</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;{</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    openRFPrivateData.macState = <a class="code" href="group___open_r_f.html#gga0191e76d54bb003723263a47fa9a7101aa20cbba7c3fbef0687f9aad998e94a0e">kTransmitting</a>;</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;    openRFPrivateData.txPacketType = packetType;</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;    openRFPrivateData.ackRetryCounter = 0;</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;    openRFPrivateData.rxDestinationMAC = destAddress;</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;    <a class="code" href="group___radio.html#ga92cebd918da04bf95b3ee415821358b5">HopChannelTx</a>();</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    <a class="code" href="group___radio.html#ga9d15a38533c839197cfc7a84ca016de9" title="MethodResult SendPacket(U8 length, U8 *SDU)">SendPacket</a>(destAddress,packetType,length,txBuffer);</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;    <span class="keywordflow">if</span>(packetType == <a class="code" href="group___radio.html#ggaba81c4c5fad7e2e0cef01f8e6c710ecba05720cb63d7daa7b80a60a8930396ca3">PACKETTYPE_UNIACK</a>)</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    {</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;        ClearOpenRFTimer(kAckTimer);</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;    }</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;}</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;</div>
<div class="line"><a name="l00122"></a><span class="lineno"><a class="code" href="group___open_r_f.html#gad11ed9e6c914c9c721219049f9a0d8b4">  122</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="group___open_r_f.html#gad11ed9e6c914c9c721219049f9a0d8b4">OpenRFInitialize</a>(UU32 macAddress)</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;{</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;    <a class="code" href="group___radio.html#gafd087444df2d9138356991afbc1135a6" title="U8 InitializeRadioAPI()">InitializeRadioAPI</a>(50, <a class="code" href="group___radio.html#gga8ca09000106eab66e7f5a4998107f805aedd58e14f26ddb9c640a3a744965369f">k50KBPS</a>);</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;    <a class="code" href="group___radio.html#ga70da240bdf435f229f9eb6045a418dba" title="MethodResult SetMACAddress(UU32 macAddress)">SetMACAddress</a>(macAddress);</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;    <a class="code" href="group___radio.html#ga78b5c441166756d9af91a646e0b2730f" title="U8 SetChannel(U8 Channel)">SetChannel</a>(3);</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;    <a class="code" href="group___radio.html#gae25f772e91044b5644349d607f3e48a3" title="void SetHopTable(U8 tableIndex)">SetHopTable</a>(127);</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;    openRFPrivateData.ackTimeout = 50;</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;    openRFPrivateData.macState = <a class="code" href="group___open_r_f.html#gga0191e76d54bb003723263a47fa9a7101a19d8199da79ca4c28eb644052b08f632">kIdle</a>;</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;    openRFPrivateData.ackRetries = 4;</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    openRFPrivateData.operatingMode = <a class="code" href="group___open_r_f.html#ggafc8ed4739129ef185b07220c9406f531aca42c074332be0f2a766afb361c34f00">kHopping</a>;</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;}</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;</div>
<div class="line"><a name="l00134"></a><span class="lineno"><a class="code" href="group___open_r_f.html#gad0df82f0e17ad95bd30d5b82f59f8a71">  134</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="group___open_r_f.html#gad0df82f0e17ad95bd30d5b82f59f8a71">OpenRFListenForPacket</a>()</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;{</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    ReceivePacket();</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;    </div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;    openRFPrivateData.macState = <a class="code" href="group___open_r_f.html#gga0191e76d54bb003723263a47fa9a7101ad6cfbd04bb1785e5347062ce124ec4dc">kListening</a>;</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;}</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;</div>
<div class="line"><a name="l00141"></a><span class="lineno"><a class="code" href="group___open_r_f.html#ga66e3018afaf75239d092833054be068f">  141</a></span>&#160;<a class="code" href="group___open_r_f.html#ga0191e76d54bb003723263a47fa9a7101">tOpenRFStates</a> <a class="code" href="group___open_r_f.html#ga66e3018afaf75239d092833054be068f">OpenRFLoop</a>()</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;{</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;    <span class="keywordflow">if</span>(openRFPrivateData.macState == <a class="code" href="group___open_r_f.html#gga0191e76d54bb003723263a47fa9a7101add8280cdb1cba70addb16dee65ca02e6">kWaitingForAck</a>)</div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    {</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;        <span class="keywordflow">if</span>(openRFPrivateData.timers[kAckTimer]&gt;openRFPrivateData.ackTimeout)</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;        {</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;            openRFPrivateData.ackRetryCounter++;</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;            <span class="keywordflow">if</span>(openRFPrivateData.ackRetryCounter &lt; openRFPrivateData.ackRetries)</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;            {</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;                ClearOpenRFTimer(kAckTimer);</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;                <a class="code" href="group___radio.html#ga95f238c518501c80a31b90d5e9f7c4dc">ResendPacket</a>();</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;                openRFPrivateData.macState = <a class="code" href="group___open_r_f.html#gga0191e76d54bb003723263a47fa9a7101aa20cbba7c3fbef0687f9aad998e94a0e">kTransmitting</a>;</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;            }</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;            <span class="keywordflow">else</span></div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;            {</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;                NotifyMacPacketSendError(<a class="code" href="group___open_r_f.html#gga75b3ac4a450160131d80d0178b974101a09c3a6fa88cf4c80c7516b2d657894a5">kNoAck</a>);</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;                openRFPrivateData.macState = <a class="code" href="group___open_r_f.html#gga0191e76d54bb003723263a47fa9a7101a19d8199da79ca4c28eb644052b08f632">kIdle</a>;</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;            }</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;        }</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;    }</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    <span class="keywordflow">else</span> <span class="keywordflow">if</span>(openRFPrivateData.macState == <a class="code" href="group___open_r_f.html#gga0191e76d54bb003723263a47fa9a7101a1bec80a402b7a72ae776bf8631871643">kPacketTransmitted</a>)</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;    {</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;        <a class="code" href="group___open_r_f.html#gad0df82f0e17ad95bd30d5b82f59f8a71">OpenRFListenForPacket</a>();</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;        openRFPrivateData.macState == <a class="code" href="group___open_r_f.html#gga0191e76d54bb003723263a47fa9a7101add8280cdb1cba70addb16dee65ca02e6">kWaitingForAck</a>;</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;    }</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;    <span class="keywordflow">else</span> <span class="keywordflow">if</span>(openRFPrivateData.macState == <a class="code" href="group___open_r_f.html#gga0191e76d54bb003723263a47fa9a7101a2b19c68e5a1e48fcb1227d09382413de">kAckRequired</a>)</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;    {</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;        <a class="code" href="group___open_r_f.html#ga7ada26870c6e5d53afb9e7502d39d841">OpenRFSendPacket</a>(openRFPrivateData.rxSourceMAC, <a class="code" href="group___radio.html#ggaba81c4c5fad7e2e0cef01f8e6c710ecbacb072737fc8b959c9d08bccf3880a372">PACKETTYPE_ACK</a>, 0, 0);</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;    }</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;    <span class="keywordflow">return</span> openRFPrivateData.macState;</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;}</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;<span class="keywordtype">void</span> OpenRFSetAckTimeout(U16 val)</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;{</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;    openRFPrivateData.ackTimeout = val;</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;}</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;<span class="keywordtype">void</span> OpenRFSetAckRetries(U8 val)</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;{</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;    openRFPrivateData.ackRetries = val;</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;}</div>
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